Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.

What is new in this release:

Fix a potential issue when the username had some specific characters in the path

Fix an issue with new installation notification for sideload add-ons

Fix performance regressions with WebExtension

Fix a regression with the popup menu

What is new in version 54.0.1:

Fixed a display issue of tab title

Fixed a display issue of opening new tab

Fixed a display issue when opening multiple tabs

Fixed a tab display issue when downloading files

Fixed a PDF printing issue

Fixed a Netflix issue on Linux

What is new in version 54.0:

Added Burmese (my) locale

Added support for multiple content processes (e10s-multi)

Simplified the download button and download status panel

Various security fixes

Moved the mobile bookmarks folder to the main bookmarks menu for easier access